What’s in a name?
Is it fibreglass or fiberglass? GRP (Glass Reinforced Plastic) or FRP (Fibre Reinforced Plastic)? It depends a bit on where you come from, but they all refer to the same thing: a mat or cloth of glass fibres embedded in a plastic resin.
What we call it isn’t so important. How we make it is. Traditionally, fibreglass products are produced by coating an open mould with gel coat. Layers of glass fibre are then built up with plastic resin being manually applied. The result is left to cure (i.e. for the resin to harden) before the mould can be reused. It’s messy, emits lots of fumes and requires a lot of labour.